320431039 has 2 divisors, whose sum is σ = 320431040. Its totient is φ = 320431038.

The previous prime is 320431021. The next prime is 320431073. The reversal of 320431039 is 930134023.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320431039 - 2¹⁵ = 320398271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320431339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160215519 + 160215520.

It is an arithmetic number, because the mean of its divisors is an integer number (160215520).

Almost surely, 2^320431039 is an apocalyptic number.

320431039 is a deficient number, since it is larger than the sum of its proper divisors (1).

320431039 is an equidigital number, since it uses as much as digits as its factorization.

320431039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 320431039 is about 17900.5876719174. The cubic root of 320431039 is about 684.2973518488.

It can be divided in two parts, 3204 and 31039, that added together give a palindrome (34243).

The spelling of 320431039 in words is "three hundred twenty million, four hundred thirty-one thousand, thirty-nine".